fix: 5 regex bugs + text extraction scroll + GT update

Root cause: Spiegel DSI text was truncated (lazy-loading) — the
rights/DSB/complaints sections at the bottom were never extracted.

Fixes:
1. Text extraction: scroll to bottom before innerText (dsi_discovery.py)
2. V.i.S.d.P.: add "verantwortlicher i.s.v." + "§18 Abs. N MStV" pattern
3. USt-IdNr: add "umsatzsteuer-id" + "DE 212 442 423" (with spaces)
4. Profiler: remove generic "anwalt"/"praxis" (false positive on Spiegel
   "Redaktionsanwalt"), keep only "rechtsanwalt", "kanzlei" etc.
5. Section splitter: auto_fill_from_dsi() fills empty Cookie/Social-Media
   rows from sections found in the DSI text

Ground Truth 06-spiegel.md fully rewritten with verified data from
live website — 3 L1 False Negatives identified (DSB, Beschwerderecht,
Betroffenenrechte all present on website but not in extracted text).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend-compliance/compliance/services/business_profiler.py

@@ -59,26 +59,34 @@ _NONPROFIT_KEYWORDS = [
 ]
 
 _REGULATED_PROFESSIONS = {
+    # Anwalt — nur spezifische Begriffe, nicht "anwalt" allein
+    # (matcht sonst Redaktionsanwalt, Justiziar etc.)
     "rechtsanwalt": "anwalt",
-    "anwalt": "anwalt",
-    "anwaeltin": "anwalt",
-    "anwältin": "anwalt",
+    "rechtsanwaeltin": "anwalt",
+    "rechtsanwältin": "anwalt",
     "kanzlei": "anwalt",
     "rechtsanwaltskammer": "anwalt",
-    "arzt": "arzt",
-    "ärztin": "arzt",
-    "aerztin": "arzt",
-    "praxis": "arzt",
+    "zugelassener anwalt": "anwalt",
+    # Arzt — "praxis" entfernt (matcht "in der Praxis")
+    "arztpraxis": "arzt",
+    "zahnarzt": "arzt",
+    "facharzt": "arzt",
     "aerztekammer": "arzt",
     "ärztekammer": "arzt",
+    "kassenärztlich": "arzt",
+    "kassenaerztlich": "arzt",
+    # Steuerberater
     "steuerberater": "steuerberater",
     "steuerberaterin": "steuerberater",
     "steuerberaterkammer": "steuerberater",
+    # Architekt
     "architekt": "architekt",
     "architektin": "architekt",
     "architektenkammer": "architekt",
+    # Notar
     "notar": "notar",
     "notariat": "notar",
+    # Apotheker
     "apotheke": "apotheker",
     "apotheker": "apotheker",
 }